Front-Panel Operation
Fluctuating Harmonics 4
4-19
4-39. Definition
Fluctuating harmonics are those that maintain their fixed harmonic relationship with the
fundamental, but vary in amplitude over time. If all components of a waveform vary in
amplitude over time, this is equivalent to Flicker.
4-40. Access to Fluctuating Harmonics
Use to navigate to the Waveform Menu and select Edit Fluct Harmonics from the
softkeys. See Figure 4-21.
gdw15.bmp
Figure 4-21. Waveform Menu for Fluctuating Harmonics
4-41. 6100B Capability
Number of harmonics to fluctuate Any number from 0 to all set harmonics can fluctuate
Modulation depth setting range 0 % to 100 % of nominal harmonic voltage
Modulation depth setting resolution 0.001 %
Shape Rectangular or Sinusoidal
Duty cycle (shape = rectangular) 0.1 % to 99.99 %
Modulating Frequency range 0.008 Hz to 30 Hz
Modulating Frequency setting resolution 0.001 Hz
4-42. Setting Up Fluctuating Harmonics
It is only possible to set up Fluctuating Harmonics properties for existing harmonics.
Select Edit Fluct Harmonics from the Waveform Menu softkeys.
Select the harmonic that fluctuation is to be applied to using the Previous Harmonic,
Next Harmonic or the Harmonic softkeys. The Modulated softkey toggles the
modulated check box. See Figure 4-22.
gdw16.bmp
Figure 4-22. Softkeys for Fluctuating Harmonics
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